Developer & Design Tools
6 tools
A few small tools for the things developers and designers do all day: formatting and validating JSON, testing a regular expression, converting a color between HEX, RGB, HSL and CMYK, encoding or decoding text, reading a Unix timestamp, and checking whether a color pair is readable enough under WCAG. They run locally in your browser, so what you paste doesn't get sent to a server of ours.
Tools in this category
Color Converter (HEX, RGB, HSL, CMYK)
Convert color codes between HEX, RGB, HSL, HSV and CMYK in real timeEncoding Converter (Base64, URL, Hex, Binary, Text)
Convert and decode text between UTF-8, Base64, URL encoding, hex and binary in your browser, with nothing sent anywhereJSON Formatter & Validator
Format, minify and validate JSON in your browser, with nothing uploadedRegex Tester: Test Regular Expressions Online
Test a regular expression on your text: see every match highlighted with its groups, try replacements and read a plain-language explanationUnix Timestamp Converter: Epoch to Date and Back
Convert Unix timestamps to readable dates and dates back to timestamps, in seconds, milliseconds, microseconds or nanoseconds, in any time zoneWCAG Contrast Checker
Check text and background contrast against WCAG 2.2 AA and AAA with live preview, auto-fix suggestions and a palette check